janney



UNITED STATES PATENT OFFICE.

ELI H. JANNEY, OF FAIRFAX COUNTY, VIRGINIA, ASSIGNOR TO JANNFJY CAR COUPLING COMPANY.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 251,594, dated December 27, 1881.

` i Application filed November 24, 1580. (No model.)

To all whom it may concern:

Be it known that I, ELI H. JANNEY, of the county of Fairfax and State otVirginia, have invented new and useful Improvements in Oar- Couplings; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

rIhis invention consists, mainly, in the combination of the lever-arm of a rotating hooknose with an oscillating locking-block ot' special construction.

It consists, further, in certain special details of construction, all of which will be fully de` scribed hereinafter.

In the drawings, Figurel represents a horizontal sectional view ofthe draw-head; Fig. 2, a side section of the same; Fig. 3, a horizontal section of the coupling; Fig. 4, a side section of the same. Figs. 5 and 6 represent elevations of the locking-block enlarged; Fig. 7, a side elevation of the lever and pivot-pimenlarged 5 and Fig. 8 a vertical section ofthe saine.

To enable others skilled in the art to make my improved coupler and properly use the same, I will proceed to describe fully its construction and manner of operation.

A, Fig. 3, represents a draw-head of the Janney type, which is provided upon one side with the chamber a, for holding the spring of the locking-block, and upon the other side With a recess, a', adapted to receive a corresponding projection, b, upon the lever B, as shown.

a2 represents curved recesses in the top and bottom plates of the draw-head, the purpose of which will he hereinafter described.

B, Fig. 3, represents the lever-arm of the coupling-hook nose, which is provided with the projection D, before referred to, the inclined face b', and the curved face b2, as shown.

O, Figs. 3, 5, and 6, represents the lockingblock, provided with a hexagonal opening extending vertically through il; and with arms c o", extending in opposite directions from the opening, as shown.

c2, Fig. 5, represents a transverse slot in the short arm of the block, and c3 c3 vertical projections located at the end of the long arm upon its upper and lower sides, as shown.

c4, Fig. 3, represents a curved bearing-face upon the extreme end ot thclong arm, asshown.

D,'.Figs. 4, 7, and 8, represents the pivot-pin, to which is attached, atits upper end, thehorzontal lever d, having the slot d', as shown.

d2",- Fig. 8, 'represents a cylindrical portion of the pin, which forms the upper bearing; d3, a tapering hexagonal portion, adapted to tit the vertical opening in the block; d4, a uniform hexagonal portion of reduced diameter, adapted to tit the sleeve, hereinafter referred to; and d5, a threaded cylindrical portion, adapted to receive a nut, as shown.

d6 representsa sleeve, located upon thelower hexagonal part of the pivot-pin, which is provided with a bearing-surface, d?, adapted to support the locking-block, and a bearing-surface, d, which rests against the draw-head and forms the lower support for the pivot-pin.

E, Fig. 3, represents a bolt, located in thc chamber a of the draw-head, which extends through the transverse slot c2 of the lockingblock when the part-s are in their proper positions, and upon which is located a Washer, e, adapted to `bear against the short arm of the locking-block, a coil-spring, e', surroundingthe same, a retaining-plate, e2, and a nut, e3, as shown. l

The opera-tion of the described construction is substantially as follows: As the lever-arm attached to the nose of the coupling is swung back into the recess vof the drawhead the inclined face at the end of the same comes in contact with the end of the long arm of the locking-block, and, swinging the saine upon its pivot-bearings, passes in behind it. The locking-block, being released by the passage of the arm, returns toits normal position and securely locks the same.

The lever-arm is like a tooth of a pinion and thelocking-block like a pivoted pawl employed in connection therewith to arrest the retro-v grade movement of the arm.

,Y When it is desired to 'uncouple the cars the pivot-pin and locking-block are revolved by means of the lever d, attached to the pin.

The adjacent bearing faces of the lockingblock and the leverarm constitute arcs of a circle drawn from the center of the pivot-pin, and hence the blockis permitted to move upon IOO the arm, in uncoupling, with the minimumV amount or" friction. The projections c3 and the recesses in which they move coincide in curvature with the line of movement of the block, so that thebinding of one part upon the other s made impossible. By means of' these projections and recesses the strain given to the pivot-pin by the pressure of the lever-arm upon the locking-block is transferred in part to the draw-head.

The upper hexagonal portion of the pivotpin being made tapering in form, and the opening of the locking-block being made to correspond, it follows that the latter may be tightly secured to the lformer by simply screwing up the nut, by means of which action the sleeve supporting the block will be raised and necessarily give the latter vertical movement upon the pivot-pin.

By means of the special construction described greater simplicity in construction is obtained with increased efficiency in action.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent. is-

l. In combination with the pivot-pin D,hav ing the lever d and the vertical portion d3, the

the pivot-pin D, having the tapering portion y d3, the sleeve d6, and the adjusting-nut, as described.

8. In combination with a lever-arm, b, the pivoted locking-block G, having two arms,one of which acts to loci; and release the lever b and the other to compress a spring, substantially as described.

4. Iu combination with the locking-block and draw-head, a pivot-pin, D, having the tapering portion d3 and bearing portions d2 d6, as described.,

5. In combination with the pivoted lockingblock C, the bolt E and springe', substantially as described.

6. In combination with thedrawhead A, the

locking-block G, the pivot-pin D, and the sleeve d6, as described.

.This specification signed and witnessed this 16th day of November, 1880.

ELI H. JANNEY. Witnesses:

JN0. MARRroTT, It. E. J ANNEY. 

